Omar Kelly breaks down Dolphins' depth chart after first wave of free agency

JOE CAVARETTA / Sun Sentinel

Tannehill (right), whose 93.5 passer rating had him ranked as the NFL’s 12th-best quarterback in 2016, is set to return from the left knee injury that forced Moore to start the season’s final four games and Miami’s playoff loss to Pittsburgh. Moore (left), who had a 105.6 passer rating last season, has shown that he’s one of the NFL’s best backups. Doughty, a 2016 seventh-round pick who spent last year on Miami’s practice squad, has a long way to go to make the 53-man roster.

Ajayi (23) had a breakout season in 2016, rushing for 1,272 yards and scoring eight touchdowns on 260 carries. While Ajayi led the NFL in yards after contract and made the Pro Bowl last season, he led a rushing attack that only gained more than 100 yards six times. Williams (26), who received a $1.8 million tender as a restricted free agent, will have to hold off Drake for Miami’s third down back role.